A photometric sensor within an Electrical Testing Station is a precision optical component that detects, measures, and analyzes light characteristics such as intensity, wavelength, or spectral distribution. It converts optical signals into electrical signals for processing by the testing station's control system, enabling verification of light-emitting components, optical assemblies, or material optical properties during quality control and functional testing. The sensor is designed for integration into automated test systems, providing quantitative data for pass/fail decisions or process control. Its measurement range spans from 0.1 to 200,000 lux, covering typical indoor to bright sunlight conditions, with an accuracy of ±3% full scale at 25°C and 60% RH. The resolution is 0.1 lux, and the spectral response is 400–700 nm, matching the CIE photopic curve. Response time is 0.5–1.0 seconds for 90% of final value. Operating temperature range is -20 to 60°C, storage -40 to 85°C, and supply voltage 12–24 V DC with reverse polarity protection. The output signal is 4–20 mA, linear with illuminance. The housing is rated IP65–IP67 per IEC 60529, dust-tight and protected against water jets, and is made of 316L stainless steel per ASTM A240 for corrosion resistance. Weight is 150–200 g without cable. Materials include a silicon photodiode, optical glass lens, aluminum housing, and copper electrical contacts. The sensor operates by receiving light through an optical input, converting it to an electrical signal, and conditioning it for digital output. Calibration against photometric standards ensures accuracy. For specific applications, verify model-specific values and standards with the legal manufacturer or supplier.
The photometric sensor operates by receiving incoming light through an optical input (lens, fiber, or window). The light interacts with a photosensitive element (photodiode, phototransistor, or CCD/CMOS array) that generates an electrical current proportional to the light intensity. This signal is then amplified, conditioned, and converted to digital data by integrated circuitry. The sensor may incorporate filters, gratings, or monochromators for spectral analysis, with calibration ensuring accurate measurement against known photometric standards.
